INTRODUCTION

The Rickard Remote Digital Wall Mounted Thermostat/Controller is

fitted with a Room Sensor and LCD display. The Thermostat/

Controller is supplied in an aesthetically pleasing, slim 121mm by

78mm plastic enclosure. The unit provides for Setpoint Temperature

adjustment and Room Temperature display. Further advanced func-

tionality is available for commissioning and set-up purposes. The unit

is designed to mount into a standard 2x4 draw-box. The MLM wall

controller is designed to work with Rickard PC based MLM software

for further functionality.

OPERATION PANEL GENERAL LAYOUT

DISPLAY BUTTONS

IMPORTANT: Make ensure that zoning and commissioning of diffus-

ers is done in the Rickard MLM Software Application before opera-

tion of the Wall Thermostat can start. Please request or download

the application on Rickard website.

GENERAL OPERATION

1. On start-up (power on), the following screen will be displayed.

• The software initiates and communicates with all other controllers

and interface boards connected on the same circuit.

• Previously stored information is collected from all controllers and

interface boards.

•The software version number is displayed while the software initi-

ates.

2. Diffuser limit detection:

• After software initiation the diffuser will drive to the fully closed

position.

• During this process the limit indicators on the display will flash and

the direction arrow will show that the diffuser is driving closed.

•When the motor drives into the end stop, the software will remem-

ber that position as the fully open position.

RIGHT SIDE

LEFT SIDE

3. Control mode:

• After limits are detected, the controller will enter control mode.

Room temperature is displayed.

•The letters “Cr” indicate the Remote Wall Thermostat temperature as

a Source for temperature display. When “CO” is displayed the Source

for temperature display is the Onboard controller & sensor. “CE” is

displayed to indicate Control Temperature Error i.e. Wall stat temper-

ature is displayed, but no temperature is selected for control purpos-

es.

• The controller will now drive the diffuser in the direction to control

room conditions.

• In PICTURE 1 the display indicates that cooling mode is required to

get room conditions under control and the diffuser is busy driving

open.

• In this mode Room temperature is displayed. If Room temperature

was colder than set-point, heating mode would have been required

to get room conditions under control.

• PICTURE 2 indicates the diffuser has reached the fully open posi-

tion.

• PICTURE 3 indicates the diffuser is in heating mode and has

reached the minimum stop position for heating. The neck heater is

on as displayed. The diffuser could also be in heating mode without

the neck heater activated. The heater (if fitted) will only be activated

when the control disc reaches the correct position for heating.

(Factory set at 30% flow)

4) Set-point adjustment:

• To adjust the set-point, either the “UP” or “DOWN” buttons must

be pressed.

• After one of these buttons have been pressed, the current set-point

will be displayed.

• While in this screen, press either the “UP” or “DOWN” button to

adjust the set-point value.

The value displayed will now flash.

• Press the “ENTER/ACCEPT” button to be automatically accepted or

wait for the new setpoint.

• The 2 top left digits will indicate the Source of the set-point and

which set-point is Active respectively. If the display shows “r1”, this

indicates the Wall thermostat set-point is the source and setpoint 1,

ie “normal control” is active. Should the digits show “o2” then the

setpoint is active on the onboard controller and the back-off set-

point is active.

PICTURE 2

PICTURE 1

COOLING MODE

INDICATOR

HEATING MODE

INDICATOR

RE-HEATING MODE

INDICATOR

PICTURE 3

ADVANCED SETUP OPTIONS

If the Wall Thermostats setup menu is required and has been ena-

bled on the MLM application or if you have purchased a setup mod-

ule, the following display/setup options will be available (long press

the menu button until the unit beeps and release to enter the setup

menu on the wall thermostat). If adjustable, the menu items value

can be adjusted with the up/down buttons and entered using the

enter button. Each press of the menu button cycles through each

option available.

1. Supply Air Temperature Display (CO)

2. Room Temperature Display (r)

3. Motor Manual Mode and Adjust

4. Maximum Motor Limit Adjust (dr)

5. Minimum Motor Limit Adjust (dr)

6. Heater Manual Mode and Adjust (Ht)

7. Control Zone Setup

a. Loop Select (LS)

b. Control Input Select (rS)

8. Set Point Adjust

WALL THERMOSTAT DISPLAY OPTIONS

The following display options are available. Each option is available

individually or as a combination of options:

Edit Setpoint Disable

Setpoint Display

Enable Setup Menu

To activate, connect to the relevant diffuser on the MLM app, max-

imise the diffuser, select the wall thermostat and click on Display

Setup as shown in the pictures below. Select the option required and

press enter or click write.

Edit Setpoint Disable

Edit Setpoint Disable prevents the user from editing the Setpoint on

the Wall thermostat.

Setpoint Display

Setpoint Display, displays the setpoint instead of the room tempera-

ture.

Enable Setup Menu

Enable Setup Menu activates the advanced setup options. See Setup

Menu Options instructions below.

Combination of Display Options

Select any combination of the above options if required.

SETUP OPTIONS

1. Supply Air Temperature Display (CO)

• When a Supply Air (Change Over) sensor is fitted the supply air

temperature will be displayed.

• When no sensor is fitted, a zero value will be displayed.

2. Room Temperature Display (r)

• Wall Thermostat/Controller sensor value is displayed.

• “r” indicates the source of control is the Wall Controller.

3. Motor Manual Mode and Adjust

• The % control disc opening is displayed. 0% is fully closed. 100% is

fully open.

• Select the required control disc % position with “UP” or “DOWN”

buttons. Press “ENTER” to move control disc to selected position.

• Pressing “MENU” button deactives the manual mode and moves to

the next option.

4. Maximum Motor Limit Adjust (dr)

• Adjust using the “UP” button to change the maximum motor limit.

• Press the ENTER button to set the value after you have adjusted it.

5. Minimum Motor Limit Adjust (dr)

• Adjust using the “DOWN” button to change the minimum motor

limit.

• Press the ENTER button to set the value after you have adjusted it.

6. Heater Manual Mode and Adjust (Ht)

• The current re-heater output value is displayed as a % of maximum.

• “Ht” indicates the unit is in Heater Manual mode.

• Select the required output with the “UP” and “DOWN” buttons.

Press “ENTER” to activate heater at the required level.

• Pressing the “MENU” button deactives manual mode and moves to

next feature.

7. Control Zone Setup

NOTE: Rickard recommends the MLM Application loaded on a PC

to zone diffusers. See the MLM Commissioning Guide for more

information.

a. Loop Select (LS)

To bind a diffuser to a control zone the following steps is required:

• The top left character display will indicate ‘LS’ for Loop Select.

• Keep the enter button pressed until the unit beeps.

• The menu will display ‘L and a zone number, ‘00’. If the zone has

been set up previously, that particular zone number will display in-

stead of ‘00’.

• Press enter again and the zone number will flash.

• Use the up/down arrow to select a zone number. A new installation

should always start with zone ‘1’.

•Press enter and observe the ‘L’ flashing.

• Go to the first diffuser in that zone and press the button on the

MLM Diffuser Controller board, this is normally situated on the trim

disk.

• After a few seconds the Setup Module will beep and the flashing

LED on the MLM DC board will stay switched on momentarily this

indicates the diffuser is set up for that control zone.

• Go to the next diffuser in that zone and press the button again and

observe the same result. During this time the ‘L’ indicator will flash

and the zone number will be on displayed.

• Continue the process until all the diffusers in the control zone have

been selected.

•Press the enter button and observe the ‘L’ steady and the zone

number flashing.

• Using the up/down arrows, select the next zone number and con-

firm by pressing enter.

• Using the same procedure, set each diffuser in the control zone.

• A maximum of fifteen control zones (one diffuser per zone) can be

set. A minimum of one zone with one to fifteen diffusers (slaves) can

be set up.

• Press enter again to exit the last zone that was set.

• To advance to the next menu, press the menu button.

b. Control Input Select (rS)

The next function is to select the setpoint, control and supply air

temperatures for a particular control zone. As mentioned, to use this

function the setup module must be connected to a diffuser in the

control zone of interest. In a default system with only one wall-stat

or one analog module connected to a control zone this function will

not be required.

• The display will indicate ‘tS’ in the top left character display.

• The character display will indicate the current status of the three

control inputs as follows:

‘o’ - indicates ‘on-board’ for analog module.

‘r’ - indicates ‘remote’ for wall-stat

‘-‘ - indicates not selected

• Press and hold the enter button until the unit beeps. The first char-

acter will flash with the display indicating ‘t’ for control temperature

selection.

• Pressing the up/down arrows will toggle between remote or on-

board temperature selections. Be sure to select a valid option, i.e.

when selecting ‘remote’ there must be a wall-stat connected to that

particular control zone.

• Press enter and the character ‘S’ will show to indicate setpoint se-

lection. The up/down arrows will toggle this function.

• Press enter to select the supply air input, character ‘C’. The arrow

buttons will toggle between ‘o’, ‘r’ and ‘-‘ if supply air measurement

is not required.

• On pressing enter again the three characters will flash until the

system has accepted the new setup.

• Press the menu button to exit this function.

•To advance to the next menu, press the menu button.

8. Set Point Adjust

The next function displayed is setpoint adjust with the ‘SP’ icon on.

♦ Note the setup module must be plugged into the control zone of

interest for this function.

♦ The top left character display will indicate ‘S1’ for setpoint 1. Set-

point

2, or the back off setpoint is not adjustable with this unit.

♦ Press the up/down arrow to select the required setpoint. The digits

will flash.

♦ Press enter. The display will flash ‘---‘ until the new setpoint has

been accepted.

♦ Press the menu button to exit this function and revert to the main

menu.